Poelt, J/ Leuckert, C 1991: Der Formenkreis von Protoparmelia atriseda (Lichenes, Lecanoraceae) in Europa. - Nova Hedwigia52(1-2): 39-64. [RLL List # 143 / Rec.# 14747] Keywords: PROTOPARMELIA/ CHEMISTRY/ EUROPE/ LECANORA/ KEY/ NEW TAXA/ MASSACHUSETTS/ COLORADO
Abstract: 3 maps. 3 plates. ["The lichens related to Protoparmelia (formerly Lecanora) atriseda are distinguished within the genus Protoparmelia by filiform, often curved spermatia, by the regular presence of norstictic acid, at least in excipula, and by close parasitic connections to various lichen hosts." Treatment of five species; key. New: Protoparmelia Sect. Phaeonora sect. nov., Protoparmelia cupreobadia (Nyl.) Poelt comb. nov., P. leproloma (R. Sant.) Rambold & Poelt comb. nov., P. phaeonesos Poelt sp. nov., and P. placentiformis (Steiner) Poelt comb. nov.]